Button-sewing machine.



Hg GORRALL.

BUTTON SEWING MACHINE.

APPLICATION FILED JAN. 10, 1911.

1,086,651, Petentea Feb. 10, 1914.

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H. CORRALL.

BUTTON SEWING MACHINE.

APPLIGATION FILEp 1,411.10, 1911.

Patented Feb. 10, 1914.

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HERBERT OGRE-ALL, OF LEICESTER, ENGLAND, ASSIGNOR TO SINGER MANUFAC-TUBING COMPANY,.A CORPORATION 0F NEW JERSEY.

BUTTON-SEWING MACHINE.

Losacsi.

Application led January 10, 1911.

To all whom it may concern:

Be it known that I, HERBERT CORRALL, a subject of the King of the UnitedKingdom of Great Britain and Ireland, residing at Leicester, in thecounty of Leicester, England, have invented certain new and usefulImprovements in Button-Sewing Machines, of which the following is aspecification, reference being had therein to the accompanying drawings.

rlhis invention relates to an improvementin button sewing machinesadapted for sewing on what may be termed integral shank buttons, inwhich a projection is provided upon the inner face of the head eitherpressed or molded thereon and suitably apertured to receive thefastening threads or formed of a. tuft of cloth or other soft substanceadapted to be penetrated by the needle carrying the fastening thread.

The invention has for its object to provide an effective andconveniently operated device for holding the buttons for the stitchingoperation.

In its preferred form, the improvement comprises a throat-plate formedin its upper face with a longitudinal slot connected at opposite sidesrespectively with a buttonshank cavity aording the needle-hole and a.clamp-jaw receiving cavity, the latter being entered by an upturned lipconstituting the clamp-jaw for the button-head and formed upon atransversely reciprocating spring-pressed slide-bar suitably journaledupon the sewing machine work-plate and having a depending pin connectedat one end with a rock-lever fulcrumed beneath the bed-plate andattached to one end of a reciprocating rod adapted to be engaged at theother end by the depending arm of the presser-foot lifting angle-leverfulcrumed upon the bracket-arm of the machine. The presserfoot, whoseoperative face overlies the top of the throat-plate, is cut outcorrespondingly with the button-shank cavity of the latter, and isfastened to the usual spring-pressed presser-bar adapted for operativeengagement with the presser-foot lifting angle-lever, the actuation ofthe latter causing the simultaneous lifting of the presser-bar forintroduction and removal of the work and retraction of the button-clampjaw for release and introduction of the button. The button-holdingmeans, as thus described, are preferably applied to an over-Specification of Letters Patent.

Patented Feb. 10, giat.

Serial No. 601,867.

seaming sewing machine having a jogging needle moving alternately inpaths traversing and beyond the end of the button-shank, but it isobviously immaterial howv the relative ogging movements between thebutton and work and the stitch-forming mechanism be produced, as regardsthe present improvement.

In the accompanying drawings, Figure 1 is a rear side elevation of asewing machine embodying the present improvements, and Fig. 2 a bottomplan view of the same, the forward end portion of the bed-plate beingomitted in both views. Fig. 3 is a sectional elevation representing thebutton-holder, the needle and its lateral jogging means. Fig. 4 is aperspective view showing upon a larger scale the operative portions ofthe buttonholder separated to receive a button and the folded work towhich it is to be attached. Fig. 5 is a perspective view of the moldedperforate-shank button which the present improvement is adapted toaccommodate.

rlhe machine is constructed with the usual base l and over-hangingbracket-arm 2 in which is mounted the usual main-shaft provided withfast and loose pulleys 3 and 4 upon which the power belt is directed bymeans of the belt-shifter 5 of the stop-motion mechanism of usual orsuitable construction. In the head of the bracket-arm is journaled theswinging needle-frame 6 in which is mounted the reciprocating needlebar7 carrying the jogging needle 8. The needle-bar frame 6 is pivotallyconnected with one end of a pitman 9 adjustably attached at the otherend to the groove segment lever l0 fulcrumed upon the bracketarm at l()Xand having a stud entering the cam-groove 11X of a disk l1 connectedwith and driven at one-half the speed of the main-shaft from which theneedle-bar derives its reciprocating movements. Coperating with theneedle in the production of overseam stitches is a well known form ofshuttle mounted for oscillation in a raceway in a plane parallel withthe jogging movements of the needle. The bed-plate has the usual openingsurrounding the needle-path, and has let into its upper face adjacentthereto the throat-plate l2 formed with apertures 13 for the fasteningscrews and having in its flat upper face the longitudinal button-headreceiving slot 14 formed at its opposite sides with the laterally eX-tending button-shank cavity 15 affording a needle aperture 16 and theclamp-jaw receiving cavity 17. The cavity 17 of the throat-plate ispartially closed by means of a plate 18 secured in position by screws 19and forming a closed channel for the reduced forward end portion 20 of aslide-bar 21 having at its extreme forward end the ,upturned lip 22whose forward extremity affords a clamp-jaw fo-r engagement with theouter face of the button whose opposite face is thereby pressed againstthe forward wall of the slot 14 in the throat-plate. The rearwardportion of the slide-bar 21 is guided by means of a strap 23 securedupon the bed-plate by screws 24, and has a longitudinal socket 25entered by a pin 26 having its apertured head 27 secured by means of thescrew 28 upon the bed-plate, a spring 29 being interposed between theinner end of said sock-et and the adjacent end of the pin 26 forpressing the slide-bar 21 normally toward the throat-plate.

Depending from the rearward end of the slide-bar 21 through an aperture1x in the bed-plate is a stud 30 entering an aperture in the extremityof one arm 31 of a rocklever having a boss 32 intermediate its endsjournaled upon the fulcrum-screw 33 tapped into the lower side of thebase-plate, and carrying upon its oppositely extending arm 34 thestud-screw 35 embraced by the apertured forward end 36 of thereciprocating rod 37 journaled in a suitable bearing aperture in thebracket 3S having apertures 39 for fastening screws 40 by means of whichit is attached to the under side of the bedplate.

The usual spring-pressed presser-bar 41 has attached to the reducedlower end by means of the fastening screw 42 the shank 43 of thepresser-foot 44 which has at the inner edge the lateral cavity 45similar in contour to the cavity 15 16 of the throatplate and overlyingthe face of the latter adjacent said cavity. The presser-bar has theusual xed collar provided with a backwardly extending arm 46 adapted forengagement by the forwardly projecting arm 47 of the presser-liftingangle-lever fulcrumed by means of the stud-screw 48 upon the back of thebracket-arm and having a depending arm 49 passing through a slot 50 inthe bed-plate and moving in a path beneath the same embracing therearward extremity of the reciprocating clamp-actuating rod 37. Inpractice, the angle-lever 47 49 receives its operative movements fromengagement with its depending arm of the curved bar 51 secured by meansof the setscrew 52 in a boss 53 of the collar 54 which is fixed upon thetransverse rock-shaft 55 mounted beneath the top of the work-supportingtable and having an operative connection with a knee lever or treadlecontrolled by the operator. The machine is also provided with the usualfinger-lever 56 by means of which the presser may be lifted by handindependently of the angle-lever 47 49.

In the use of the machine, the rock-shaft 55 is operated to tilt theangle-lever 47 49, whereby the presser-bar is lifted to raise thepresser-foot and the button-clamp jaw 22 is simultaneously retracted foradmission of a button, as represented in Fig. 4. A button having beendropped by hand into the slot 14 with its edge resting upon the convoi'-gently inclined bottom portions of the latter,

and the folded material m having been introduced beneath thepresser-foot with its edge abutted against the adjacent end of thebutton-shank, the presser-lifting angledever is released, whereby thepresser-foot descends under the action of the presser-bar spring andrests upon the material adjacent the cavities 15 and 45, and at the sametime the slide-bar 21 advances under the action of its spring 25 toengage the jaw 22 with the rounded outer face of the button which isforcibly seated thereby against the opposite wall of the button-headslot 14 in the throat-plate and the adjacent edge of the presser-foot,as represented in Fig. 3. The stitch-forming mechanism being now setv inmotion, the needle descends alternately through the button-shank eye andthe folded edge of the material in the production of the fasteningstitches. The predetermined number of stitches having been applied andthe machine automatically stopped by the automatic action of thestop-motion device, the pressenfoot is lifted and the jaw 22 retractedfor removal of the work or shifting of the latter preparatory toapplication of the succeeding button. At the completion of abutton-fastening operation, the work is opened out flat and the buttonoccupies a po sition in the body of the material.

1t will be obvious that the position of the extremity of thebutton-shank, which affords a stop for the folded edge of the materialin the stitching operation, will determine whether or not the needlewill penetrate both faces of the material, and hence whether the buttonis fastened by blind stitches or through-and-through stitches.

Having thus set forth the nature of the invention, what I claim hereinis 1. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, of a button-support formed with abutton-head seat substantially parallel with the needle and with anadjacent button-shank cavity, a pressure member overlying saidbutton-support adjacent said cavity and movable toward and from saidsupport and substantially parallel with the needle, and a button-headclamp-jaw movable toward and from and transversely of the button-headseat with which it cooperates in holding the button-head.

2. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, of a button-support formed with abutton-head seat substantially parallel with the needle and-an adjacentbutton-shank cavity, a pressure member overlying and disposed inclamping relation with said button-support adjacent said cavity and atthe side of the seat within the range o-f movement of the needle, aspringactuated button-head clamp-jaw movable toward and from andtransversely of the button-head seat, and means for retracting saidclamp-jaw in opposition to its spring.

3. In a sewing machine, the combination with stitch-forming'mechanismincluding a reciprocating needle, of a button-support formed with abutton-head seat substantially parallel with the needle and an adjacentbutton-shank cavity within the range of movement of the needle, apressure member overlying and adapted to rest upon said button-supportadjacent said cavity and formed with a lateral recess above and inregister with the latter, a button-head clamp-jaw movable toward andfrom and transversely of the button-head seat, and means including acommon operative member for lifting said pressure member and retractingthe buttonhead clamp-jaw.

4. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, of a. throat-plate having alongitudinal button-head receiving slot with connected lateraloppositely disposed button-shank cavity and clamp-jaw receiving cavity,a presser-foot formed at one side with a button-shank recess in registerwith the button-shank cavity of the throat-plate, a slide-bar movabletransversely of said slot in the throat-plate and carrying a buttonheadclamp-jaw entering the clamp-jaw receiving cavity of the throat-plate,and means for lifting the presser-foot and retracting said slide-bar.

5. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, of a button-support formed with abutton-head seat substantially parallel with the needle and an adjacentbutton-shank cavity, a pressure member overlying said button-supportadjacent said cavity, a transversely movable springpressed slide-barcarrying a button-head clamp-j aw in register with said seat, arocklever mounted upon a xed fulcrum, an operative connection betweensaid slide-bar and said rock-lever, an operating push-rod connected withsaid rock-lever, an anglelever mounted upon a fixed fulcrum and havingone arm in operative relation with the pressure member and another armin operative relation with said operating pushrod for simultaneouslyoperating the pressure member and button-head clamp-jaw, and means foractuating said rock-lever.

6. In a sewing machine, the combination with stitch-forming mechanismincluding a reciprocating needle, of a support permanently sustained insubstantially xed angular relation with said needle and having inangular relation a work-supporting surface and button-head seat withadjacent buttonshanlr cavity, a presser-foot overlying and disposed inclamping relation with the work-supporting surface of said support, anda button-head clamp-jaw movable toward and from and transversely of saidbutto-n-head seat.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HERBERT CORRALL.

Witnesses:

WALTER W. BALL, F. I-IooD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

